diff --git a/src/utils/shared_files.cc b/src/utils/shared_files.cc
index 674a1c2e..765c859e 100644
--- a/src/utils/shared_files.cc
+++ b/src/utils/shared_files.cc
@@ -234,6 +234,7 @@ bool SharedFiles::write(const std::string& fileName,
         error->assign("failed to write: " + fileName);
         ret = false;
     }
+    fflush(a.second);
     pthread_mutex_unlock(&a.first->lock);
 
     return ret;